42131480

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{557}}^1$

素因数の和:660

約数の個数: 64

約数和(自身を含む): 99636480

約数和(自身を除く): 57505000

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 61, 62, 122, 124, 155, 244, 248, 305, 310, 488, 557, 610, 620, 1114, 1220, 1240, 1891, 2228, 2440, 2785, 3782, 4456, 5570, 7564, 9455, 11140, 15128, 17267, 18910, 22280, 33977, 34534, 37820, 67954, 69068, 75640, 86335, 135908, 138136, 169885, 172670, 271816, 339770, 345340, 679540, 690680, 1053287, 1359080, 2106574, 4213148, 5266435, 8426296, 10532870, 21065740, 42131480]

約数ペア:

[(1, 42131480), (2, 21065740), (4, 10532870), (5, 8426296), (8, 5266435), (10, 4213148), (20, 2106574), (31, 1359080), (40, 1053287), (61, 690680), (62, 679540), (122, 345340), (124, 339770), (155, 271816), (244, 172670), (248, 169885), (305, 138136), (310, 135908), (488, 86335), (557, 75640), (610, 69068), (620, 67954), (1114, 37820), (1220, 34534), (1240, 33977), (1891, 22280), (2228, 18910), (2440, 17267), (2785, 15128), (3782, 11140), (4456, 9455), (5570, 7564)]